Using Error Provider Control in Windows Forms and C#
In this example we will see how to use the ErrorProvider control in Windows forms to provide validations in Windows Forms and display user-friendly error messages to the user if the validation fails.
Retrieve the Autonumber Value in Access using C#
This sample deals with the retrieval of the value of the Autonumber field for a data row inserted in MS Access 2000. SQL Server provides access to new Identity values through SCOPE_IDENTITY, IDENT_CURRENT and @@IDENTITY based on the scope and session boundaries. In Jet 4, Microsoft added support for ANSI-92 SQL syntax, including support for @@IDENTITY. This feature can be very useful in the Internet mode. Typically, you will be able to identify and access rows inserted from Web pages and manipulate the newly added rows.
Form Authentication for Mobile Applications
In this example we will authenticate mobile web users for our application using Forms Authentication.
Other forms of authentication for mobile web applications are
- Windows Authentication
- Passport Authentication
Mobile Stock Quote Tracker
We will create a mobile stock quote tracker program in this article. The program retrieves the real time quotes of symbols specified by the user and displays the results in a user friendly format. The user can also specify the high and low thresholds for setting alerts. The View Stock Alerts screen displays the stocks that have crossed above the high threshold and stocks that have values below the low threshold.
The stock symbols selected by the user are stored in a simple MS Access database containing a single table "tblStk"
Here is the data structure of tblStk
Shell Commands within C#
In this article we will examine a few examples for executing shell commands outside of our program using C#. In VB.Net, we can make use of the familiar Shell command to run an executable program. However the Shell function is not available in C#. The Process Class provides access to local and remote processes and enables you to start and stop local system processes.
Create FTP and Web IIS Virtual Directory Using C#
In this example we will create a Windows Form Project that will create new FTP and Web IIS Virtual Directories from code based on the name and path specified by the user. You can create virtual directories on the local computer by specifying the server name as "localhost" or you can create the virtual directory on a remote computer by specifying the machine name.
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